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1、1185.4416 41.847 21.79 67.5105 230.40.6 121.2436 0.73623 43.512 35.217 39.624 6.210.03 2101.4 51.30.27 91.23.8 0.7560.18 0.660.3 11.971.5 69.62.9 38.40.8 150.06 15.62.9 3.771.8 0.0296 5.220.3 9.990.02 4.670.9 52.44 1.6666.1 9.4320.002 5.66.5 4.882.9 0.614.3 8.92.4 5.555 9.770.02 1.3845.1 8.7883 12.6
2、61 0.0590.2 4.2681.7 5.75.7 9.462.85 17.86.4 1.54.9 12.50.88 5.5555.2 2.223.33 7.65885 36.020.3 56.788（循环小数的用简便方法，除不尽保留 2 位小数）： 8.20.12 0.80.9 76.45.4 4.73 1.251.2 3242 14.362.7 8.336.2 1.70.03 2.410.7 0.3961.2= 0.7560.36= 15.61.3= 0.181.5= 0.0251.4= 13.0636= 0.040.12 3.842.6 5.763 17.1522 90.753.3
3、3.680.25 16.90.13 1.553.9 3.70.016 13.760.8= 5.20.6 18.41.3 6.40.5 4.480.4 15.255 35.44.2 0.0420.54 0.760.32 0.250.046 2.523.4 1.0825 0.120.50.16 4.80.25 0.1251.4（保留两位小数） 2.50.7= （保留三位小数） 10.13.3= （商用循环小数） 10.7512.5= （用乘法验算） 3.259.04= （用除法验算） 3 能简算的要简算 2.57.14 16.129916.12 5.20.90.9 7.2899+7.28 4.35
4、00.2 642.640.5 2615.715.724 (2.275 0.625)0.28 3.94+34.30.2 1.2(9.62.4)4.8 8.91.14.7 2.75.43.9 3.69.85-5.46 8.053.4+7.6 6.584.50.9 2.80.5+1.58 324.90.9 4.84.80.5 (1.250.125)8 4.8100.1 56.59956.5 7.0910.80.87.09 4.85 + 0.35 1.4 8.7 17.4 - 8.7 7.4 12.50.42.58 0.873.16+4.64 9.5101 0.68 （5.2 -3.5） 1.25 4
5、0.5 0.81 0.18 4.8 （15 2.4） 6.81+6.8199 0.2518540 4.40.83.40.8(9.37+937+937+937) 25 2.376.3+2.373.7 2.51.250.32 3.810.1 2.5(3.80.04) 7.69101 3.810.1 0.2539+0.25 0.12572 460.33+540.33(85.27) 1.25 6.81+6.8199 0.2518540 6.80.750.5 3.750.1252.75 1.53+23.47.2 9.599 13.50.98 12.58.823.80.12= 0.570.6= 6.40.
6、5= 6.75.8= 9.83.8= 7.86.4= 4.62.7= 4.52.7=51.6= 30.6= 31.2= 6.77.6= 5.47.8= 2.63.6= 3.51.7= 8.32.6= 1.40.7= 4.52.8= 7.42.6= 6.21.4=5.42.6= 2.31.4= 3.71.8= 5.21.6=3.60.8= 0.661.4= 6.55.8= 0.720.49= 0.420.28= 0.240.19= 2.41.3= 4.52.3=0.720.27= 0.780.32= 0.650.04= 0.230.16= 0.290.15= 0.160.19= 41.2= 74
7、.6= 60.37= 0.280.27= 0.750.42= 2.31.9=80.64= 2.70.8= 104.2= 7.13.9= 4.31.4= 2.61.6= 0.80.3= 0.650.4= 0.910.6= 1.81.6= 4.80.5= 3.20.4=9.84.8= 128.3= 15.26.5= 20.111.1= 13.3410.32= 6.520.48= 6.35.1= 8.73.6= 14.34.3= 1.50.54= 104.2= 2.473.24=2.980.56= 5.641.78= 8.020.98= 7.13.9= 2.811.39= 12.534.67= 7.
8、26.45= 1.653.35= 7.961.45= 601.27= 6.074.89= 50.41=0.90.5= 20.7= 1.24.3= 5.42.7= 62.9= 3.71.7= 4.20.8= 37.52.5= 2.24.3= 9.57.1= 3.51.6=5.22.8= 7.81.6= 9.64.1= 104.2= 5.12.5= 4.13.4= 1.23.8= 9.64.1= 7.81.6= 3.51.6= 4.41.4= 2.92.1=3.51.2= 4.83.4= 6.92.5= 2.57.8= 85.4= 6.92.5= 23.5= 6.82.2= 4.75.4= 4.1
9、8.8= 2.25.5= 9.62.1=1.73.8= 7.43.6= 0.80.23= 1.62.4= 4.73.5= 1.23.6= 1.53.8= 2.81.2= 7.32.7= 7.32.7= 6.23.7= 4.23.9=0.540.65= 7.55.2= 0.70.5= 0.320.47= 8.36.3= 7.20.42= 0.480.52= 0.80.25= 43.50.65= 0.320.16= 0.350.55= 0.870.8=0.240.08= 0.920.37= 1.40.6= 3.64.2= 0.720.48= 6.83.2= 7.13.4= 0.420.66= 0.320.68= 2.87.2= 0.650.19= 3.091.2=3.255.64= 0.250.47= 0.820.18= 7.82.4= 0.450.18= 0.40.16= 8.21.8= 0.730.27= 83.2= 9.84.8= 32.4= 2.80.9=1.290.18= 5.10.8= 100.3= 8.94.9=
